Up until today, all of my devices have been connected to my 2.4ghz radio - with no issues. Since I recently added a few new devices, I decided to spread them across both my X4's radios. SSD only differs by radio type, they share the same password. Details for each are broadcast, and all my devices can see both of them. When I attempt to connect to the 5ghz radio, my devices are unable to do so. On my cell phone, I can see that it attempts to connect 3 (or 5) times, but it is unable to connect. Only error message it displays is 'unable to authenticate'. I don't get any detailed info from my other devices. The password for the 5ghz gets saved by each device, but again, none are able to connect. I've stopped the 5ghz radio and restarted, to no avail - result is the same. I've had this unit since February of this year and I've experienced no issues with it - until now. Has anyone else encountered this issue? Any advice for resolving it? Any input is much appreciated.

Here's what I'd try.1. log into your devices and "forget" the network.2. log into the router and change the password/reset it to what you think it is. It isn't hard for a space to be at the end of a password and not realize its there. 3. then try to reconnect.

Thanks for the suggestion, plemans. Just gave it a try, but that wasn't the issue (I hoped it was) - same result.

If you're using any special characters in your password, remove them. They can occassionlly create issues.Another thing to try is to disable the password entirely. If it works, it means the wifi is fine, its something to do with the password setup or password itself.

Okay, not sure why I didn't try that before. I turned off the security and it functioned fine. Once I add the WPA2-PSK [AES] security (and the SAME password as was entered for the 2.4ghz radio), I'm unable to authenticate then. I tried the same password (which had no special characters), variants with caps and no caps, even all numbers (since the field can take 8-63 characters or 64 hex digits). Once I create a PW to secure it, I can't authenticate.

Is it only certain wireless devices? Aka, android, IOS, smart devices?What all types of devices are affected? Another thing you can possibly try is setting the 5ghz speed down. Shouldn't impact it but its worth a shot.

Nighthawk X4 - WiFi Cable Modem Router - Unable to connect to 5ghz

13 Replies

plemans
Guru - Experienced User
Dec 14, 2019
Here's what I'd try.
1. log into your devices and "forget" the network.
2. log into the router and change the password/reset it to what you think it is. It isn't hard for a space to be at the end of a password and not realize its there.
3. then try to reconnect.
- RegularDude
  Aspirant
  Dec 14, 2019
  Thanks for the suggestion, plemans. Just gave it a try, but that wasn't the issue (I hoped it was) - same result.
  - plemans
    Guru - Experienced User
    Dec 14, 2019
    If you're using any special characters in your password, remove them. They can occassionlly create issues.
    Another thing to try is to disable the password entirely. If it works, it means the wifi is fine, its something to do with the password setup or password itself.

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Nighthawk X4 - WiFi Cable Modem Router - Unable to connect to 5ghz